+3.3 Changing a PKCS#12 structure password.
+
+int PKCS12_newpass(PKCS12 *p12, char *oldpass, char *newpass);
+
+This changes the password of an already existing PKCS#12 structure. oldpass
+is the old password and newpass is the new one. An error occurs if the old
+password is incorrect.
+